Sears, at least the stores that sell clothes, are usually in a mall. The original stores a number of decades ago only sold appliances and vehicle supplies. But now they sell pretty much everything, even a small amount of food! They may be an American only company. I haven't looked, but they might be availible for order online though.
I forgot to share a funny little story about when checking out. I was excited, so I was being a little more talkative than I needed to be probably.
I told her how excited I was to see these, and how much I just LOVE the show and showed her the button of Ed on my wallet and the Cheese charm on my phone. She asked what show it was. I told her "Foster's Home for Imaginary Friends". She said "Oh yeah, I remember that show! It was funny!" I'm all like,
Uh, you recognized the name but not the characters on these garments? And how long ago was this that you saw it? And then she pointed to Bloo and said "I like this guy the best." I said "Blooregard?" and she said "Yeah", and acted like she was going to repeat his name, but maybe needed to hear it again to be sure she said it right.
I could tell she really had no clue the show even existed until I brought it up. She was just humoring me. But she was nice, and it made for an amusing story.
Edit: There ya go, Ryan! You edited your post while I was typing.